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Wisconsin

$62+ Cheap flights from Ontario (ONT) to Wisconsin

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MKE
Feb 3 — Feb 101
Tue 2/3
Tue 2/10
1 adult, Economy
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Cheap flight deals from Ontario to Wisconsin

Cheapest flights from Ontario to Wisconsin
Explore the most affordable flight options available from Ontario to Wisconsin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 4, 2026.

This CheapOair deal was found by Cheapflights users on 1/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/287:15 amONT - MSP
1 stop13h 44mFrontier
Wed 2/410:45 amMSP - ONT
1 stop6h 22mFrontier
Deal found 1/3$129
This Kiwi.com deal was found by Cheapflights users on 1/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/287:15 amONT - MSP
1 stop13h 44mFrontier
Mon 2/25:22 pmMSP - ONT
1 stop8h 58mFrontier
Deal found 1/2$132
This Kiwi.com deal was found by Cheapflights users on 1/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/287:15 amONT - MSP
1 stop13h 44mFrontier
Tue 2/310:45 amMSP - ONT
1 stop6h 22mFrontier
Deal found 1/2$133
This Kiwi.com deal was found by Cheapflights users on 1/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/296:20 amONT - ORD
1 stop10h 11mFrontier
Sun 2/19:38 pmORD - ONT
1 stop19h 03mFrontier
Deal found 1/3$135
This Kiwi.com deal was found by Cheapflights users on 1/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/306:20 amONT - MSP
1 stop15h 37mFrontier
Fri 2/66:45 amMSP - ONT
1 stop19h 35mFrontier
Deal found 1/2$138
This Trip.com deal was found by Cheapflights users on 1/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/247:15 amONT - ORD
1 stop25h 42mFrontier
Sun 1/259:38 pmORD - ONT
1 stop16h 32mFrontier
Deal found 1/2$146
This Kiwi.com deal was found by Cheapflights users on 1/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/296:20 amONT - MSP
1 stop15h 37mFrontier
Wed 2/410:45 amMSP - ONT
1 stop6h 22mFrontier
Deal found 1/2$147
This Kiwi.com deal was found by Cheapflights users on 1/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/56:20 amONT - MSP
1 stop6h 21mFrontier
Mon 2/95:22 pmMSP - ONT
1 stop8h 58mFrontier
Deal found 1/2$148
This CheapOair deal was found by Cheapflights users on 1/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/177:15 amONT - MSP
1 stop14h 03mFrontier
Sat 1/2410:45 amMSP - ONT
1 stop14h 39mFrontier
Deal found 1/3$155
This CheapOair deal was found by Cheapflights users on 1/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/217:15 amONT - MSP
1 stop13h 44mFrontier
Sat 1/2410:45 amMSP - ONT
1 stop14h 39mFrontier
Deal found 1/2$157
This Kiwi.com deal was found by Cheapflights users on 1/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/317:15 amONT - ORD
1 stop25h 42mFrontier
Mon 2/167:19 pmORD - ONT
1 stop19h 52mFrontier
Deal found 1/1$162
This Kiwi.com deal was found by Cheapflights users on 1/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/56:20 amONT - ORD
1 stop10h 11mFrontier
Mon 2/167:19 pmORD - ONT
1 stop19h 52mFrontier
Deal found 1/1$163

Find flight deals from Ontario to Wisconsin

Keep the following information in mind while searching for Ontario to Wisconsin flight deals. Data was last updated January 4, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$129
(CheapOair)

One-way from

$62
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$384
Provider with most accurate pricing for Los Angeles-Milwaukee-Mitchell flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Milwaukee-Mitchell flights.
Search Deals
From Ontario to Wisconsin
Search Deals
One-way flight from Ontario to Wisconsin
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($98 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Wisconsin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 4, 2026.
Use the filters below to find and compare flights from Ontario to Wisconsin that are best for you.

Fly from

Ontario

Fly to

Wisconsin

Route

Depart

Return

Price

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Wed 2/4

7:15 am-10:59 pm

1 stop13h 44m

Minneapolis St Paul

Thu 2/5

6:45 am-12:20 am

1 stop19h 35m

$157

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Thu 2/5

6:20 am-2:41 pm

1 stop6h 21m

Minneapolis St Paul

Mon 2/9

5:22 pm-1:52 pm

2 stops22h 30m

$173

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Fri 1/30

6:20 am-11:57 pm

1 stop15h 37m

Minneapolis St Paul

Wed 2/4

10:45 am-3:07 pm

1 stop6h 22m

$174

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Fri 1/30

6:20 am-11:57 pm

1 stop15h 37m

Minneapolis St Paul

Tue 2/3

10:45 am-3:07 pm

1 stop6h 22m

$174

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Wed 2/25

8:40 am-10:59 pm

1 stop12h 19m

Minneapolis St Paul

Thu 2/26

8:22 pm-11:59 pm

1 stop5h 37m

$180

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Wed 2/18

7:30 am-10:59 pm

1 stop13h 29m

Minneapolis St Paul

Wed 2/25

10:45 am-9:34 am

1 stop24h 49m

$181

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Sat 2/21

6:00 am-9:05 am

1 stop25h 05m

Minneapolis St Paul

Wed 2/25

10:45 am-9:34 pm

1 stop12h 49m

$184

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Wed 1/28

7:15 am-10:59 pm

1 stop13h 44m

Minneapolis St Paul

Fri 1/30

6:45 am-12:20 am

1 stop19h 35m

$190

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Fri 2/13

6:00 am-11:58 pm

1 stop15h 58m

Minneapolis St Paul

Sun 2/15

6:45 am-9:33 pm

2 stops16h 48m

$198

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Thu 2/12

2:08 pm-9:05 am

1 stop16h 57m

Minneapolis St Paul

Mon 2/16

8:09 pm-9:34 pm

1 stop27h 25m

$213

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/3

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Wisconsin

Have a flexible travel schedule? Discover the best time to fly to Wisconsin from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Wisconsin

What is the cheapest month to book a flight from Ontario to Wisconsin?

Currently, May is the cheapest month in which you can book a flight from Ontario to Wisconsin (average of $99). Flying from Ontario to Wisconsin in December is currently the most expensive (average of $267). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Wisconsin

Get insights into the airlines that provide service to Wisconsin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Wisconsin. Reviews last updated January 4, 2026.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Ontario to Wisconsin. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,253 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
8.0
Very good
4,253 reviews
Southwest
8.0
Very good
4,253 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Delta
7.9
Good
8,023 reviews
Southwest
8.0
Very good
4,253 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
United Airlines
7.4
Good
9,138 reviews
Southwest
8.0
Very good
4,253 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
American Airlines
7.2
Good
11,077 reviews
Southwest
8.0
Very good
4,253 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Wisconsin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Wisconsin?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Wisconsin.

  • How long is the flight from Ontario to Wisconsin?

    Frontier, Delta, and Alaska Airlines can get you from Ontario to Wisconsin in just under 13h 44m. Your travel time can differ by up to 7h 05m. Airlines will cover a distance of 1491 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Ontario to Wisconsin one-way?

    $67 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $114 and $143, respectively.

  • What are the most popular routes from Ontario to Wisconsin?

    The most popular flight routes from Ontario to Wisconsin are Ontario - Chicago O'Hare Intl, Ontario - Minneapolis St Paul and Ontario - Milwaukee-Mitchell.

  • Can I find deals for flights from Ontario to Wisconsin that include hotel bookings?

    Yes. In addition to deals on Ontario to Wisconsin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Wisconsin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Wisconsin.

  • Can I find deals for business class flights from Ontario to Wisconsin?

    Yes. Cheapflights offers flight deals from Ontario to Wisconsin by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Wisconsin?

    Currently, May is the cheapest month in which you can book a flight from Ontario to Wisconsin (average of $99). Flying from Ontario to Wisconsin in December is currently the most expensive (average of $267). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Ontario to Wisconsin

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Ontario to Wisconsin

Discover the top 4 airlines that operate flights from Ontario to Wisconsin. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$230Average$427FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$276Average$598FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$521FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$330Average$423FlexibilityNo cancel feeOn-time63%

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